CPPFXT1-A7BD-1.0TS Equivalent & Substitute Parts

Part Overview

The CPPFXT1-A7BD-1.0TS is a 1 MHz XO (Standard) TTL Oscillator manufactured by Cardinal Components Inc., designed for through-hole mounting in 14-DIP Module configuration with 4 leads. This component operates at 5V with Enable/Disable functionality and is specified for industrial temperature ranges (-40°C to 85°C). The product is currently obsolete, making equivalent substitute parts necessary for ongoing system support and new design implementations where this frequency and output type are required.

Substiute Parts

CPPFXT1-A7BD-1.0TS

Cardinal Components Inc.In Stock: 923CPPFXT1-A7BD-1.0TS Datasheet

Current PartRFQ

MXO45T-3C-1M000000

CTS-Frequency ControlsIn Stock: 1107MXO45T-3C-1M000000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CPPFXT1-A7BD-1.0TS is determined by the following critical parameters that must remain consistent or compatible:

Mandatory Matching Parameters:

• Frequency: 1 MHz (exact match required)
• Voltage - Supply: 5V (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: 14-DIP configuration with 4 leads (exact match required)
• Function: Enable/Disable capability (exact match required)

Compatible Variation Parameters:

• Output Type: TTL or HCMOS/TTL (HCMOS is backward compatible with TTL logic levels)
• Frequency Stability: ±50ppm is acceptable where ±20ppm was specified (less stringent)
• Operating Temperature: Narrower range acceptable if application requirements are met
• Current - Supply (Max): Lower values are acceptable; higher values require verification of power supply capability
• Physical dimensions: Identical footprint and height required for PCB compatibility

The MXO45T-3C-1M000000 from CTS-Frequency Controls meets all mandatory matching parameters and represents a direct functional substitute.

Parameter Comparison

Engineering Selection Recommendations

The MXO45T-3C-1M000000 is a qualified substitute for the CPPFXT1-A7BD-1.0TS based on the following engineering criteria:

Functional Equivalence: Both oscillators provide 1 MHz output at 5V with Enable/Disable control in identical 14-DIP through-hole packages. The HCMOS/TTL output of the substitute is compatible with TTL input logic levels, ensuring seamless integration into existing circuits.

Compliance Status: The MXO45T-3C-1M000000 holds Active product status from CTS-Frequency Controls, providing assured long-term availability and supply chain stability. Both components meet RoHS compliance requirements and carry MSL 1 rating, eliminating moisture sensitivity concerns.

Performance Trade-offs: The substitute exhibits wider frequency stability (±50ppm versus ±20ppm) and a narrower operating temperature range (-20°C to 70°C versus -40°C to 85°C). These differences are acceptable for applications where the original part's extended temperature range and tighter frequency tolerance are not critical specifications. The substitute's lower supply current (26mA versus 45mA) and significantly lower disable current (10µA versus 50µA) provide power efficiency advantages.

Physical Compatibility: Identical footprint dimensions and negligible height difference (0.240" versus 0.235") ensure direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the MXO45T-3C-1M000000 directly replace the CPPFXT1-A7BD-1.0TS without circuit modifications?

A: Yes, for most applications. Both oscillators share identical frequency, supply voltage, package footprint, and Enable/Disable functionality. The HCMOS output of the substitute is compatible with TTL input requirements. No circuit modifications are necessary if your application does not require the original part's extended temperature range (-40°C to 85°C) or tighter frequency stability (±20ppm).

Q: What is the difference between TTL and HCMOS output types?

A: TTL (Transistor-Transistor Logic) and HCMOS (High-Speed CMOS) are output logic families. HCMOS outputs are compatible with TTL inputs, making HCMOS/TTL oscillators suitable substitutes for TTL-only specifications. The MXO45T-3C-1M000000 provides both output types, ensuring compatibility with TTL-based circuits.

Q: Does the narrower operating temperature range of the substitute affect compatibility?

A: The MXO45T-3C-1M000000 operates from -20°C to 70°C, compared to the original part's -40°C to 85°C range. Substitution is appropriate only if your application operates within the substitute's temperature limits. For systems requiring extended temperature operation, the original part's specifications must be maintained or alternative substitutes evaluated.

Q: Why does the substitute have lower supply current specifications?

A: The MXO45T-3C-1M000000 draws 26mA maximum supply current versus 45mA for the original part. This represents improved power efficiency and is advantageous for power-constrained applications. Lower current consumption does not affect functional compatibility; it only reduces power dissipation and thermal load.

Q: Are both parts RoHS compliant?

A: Yes. The CPPFXT1-A7BD-1.0TS is RoHS Compliant, and the MXO45T-3C-1M000000 is ROHS3 Compliant. Both meet RoHS environmental requirements. The substitute's ROHS3 status indicates compliance with the most current RoHS directive revision.

Q: What is the significance of the substitute's Active product status?

A: The MXO45T-3C-1M000000 is in active production by CTS-Frequency Controls, ensuring continued availability and supply chain stability. The original CPPFXT1-A7BD-1.0TS is obsolete, meaning Cardinal Components Inc. no longer manufactures it. Substitution with an active product protects against future supply discontinuation.

Q: Are there any lead-time or inventory advantages to using the substitute?

A: Yes. The MXO45T-3C-1M000000 is actively manufactured and stocked by multiple distributors. The original part, being obsolete, has limited remaining inventory and extended lead times for any available stock. The substitute provides immediate availability and predictable procurement timelines.